These are conductors encased in an insulation to prevent accidents through contact with the conductor. There are different types of covered conductors.
2. 2
COVERED CONDUCTOR
Covered conductors consist of a conductor
surrounded by a covering made of insulating
material as protection against accidental
contacts with other covered conductors and
with grounded parts such as tree branches,
etc.– As BS EN 50397-1: 2006.
3. CAUTION
3
Conductors must be handled with care
Only accessories designed and approved for the conductor may be
used
Arc protection devices must be used on lines vulnerable to over
voltages
Substations must have tripping earth-fault protection devices and
alarming secondary devices
11. Bare conductor - 4.5 faults / 100 km
Covered conductor - 0.9 faults / 100 km
FAILURE RATE
Ref: EA Technology on Covered Conductor System for Distribution
27. INTEGRATED INSULATOR – ARC PROTECTION
AND LIGHTNING ARRESTER (IIAPLA)
Protects lines up to 33 kV against
Direct Lightning and Back Flashover.
It performs the function of Composite
Insulator and a Lightning Arrestor
simultaneously.
In-built Rapid Arc Quenching System
THIS PRODUCT IS UNDER DEVELOPMENT IN SUPREME.